Java: How to check for null pointers efficiently

Question

There are some patterns for checking whether a parameter to a method has been given a null value.

First, the classic one. It is common in self-made code

Answer 1

You can use the Objects Utility Class.

public void method1(String arg) {
  Objects.requireNonNull(arg);
}

see http://docs.oracle.com/javase/7/docs/api/java/util/Objects.html#requireNonNull%28T%29